Truck side frame



Nov. 13 1923.

C. H. WILLIAMSON TRUCK 5 IDE FRAME Original Filed may i. 1920 2 Sheets-Sheet 1 Nov. 13 1923. 3,474,301.

C, H. WILLIAMSON TRUCK 5 IDE FRAME Original Filed y 1920 2 Sheets-$heet 2 Patente Nov. 13, 1923.

lTED STATS TRUCK SIDE FRAME.

Application filed May 1, 1920, Serial No. 378,170. Renewed June 21, 1922. Serial No. 569,875.

To all whom it may concern:

Be it known that I, CLARENCE H. \VILLIAMSoN. a citizen of the United States, residing at Bellwood, in the county of Blair and State of Pennsylvania, have invented certain new and useful Improvements in Truck Side Frames; and I do hereby declare the following to be a full, clear. and exact description of the invention, such as will enable others skilled in the art to which it. appertains to make and use the same.

he invention relates to trucks for railway vehicles and more particularly to new an useful improvements in truck side frames.

The principal object of my invention, broadly stated is to improve the construction of truck side frames of the built-up type by combining a simple form of tension member with a cast compression member, the latter having the bolster guides or strut columns and the journal boxes integrally connected thereto.

Another object of my invention is to pro vide a truck side frame composed of two members, the journal boxes and bolster guide columns being integrally cast with one of the said members.

Another object of the invention is to provide a cast compression member for a truck side frame said member being furnished with integral strut or bolster guide columns and journal boxes, the bolster guide columns and the journal boxes being provided with means adapted to engage the flanged tension member.

Another object of the invention is to provide a truck side frame comprising a cast compression member and a Hau ed tension member, the compression mem or having wedge shaped portions which have wedging engagement with the flanges of the tension member.

Another object of my invention is to provide a truck side frame comprising a compression member and a separate tension member, the said members being so con nested that the neutral axes thereof intersect beyond the center lines of the respective journal boxes.

To these and other ends the invention resides in certain improvements and combina-- In the drawings, wherein I have illustrated two embodiments of my invention,-

Figure 1 is a side elevation of a symmetrical portion of a truck side frame embodymg the invention.

Figure 2 is a sectional view taken on line 2-2 of Fig. 1, the section being viewed in the direction indicated by the arrows ad'acent the ends of the said line.

*ig. 3 is a sectional view on line 33 of Fig. 1, the arrows adjacent the ends of the said sectionline indicating the direction in which the section is viewed.

Fig. 4 is a view similar to Fig. 1 illustrating, however, a slightmodification.

ig. 5 is an end view'of the structure shown in Fig. 4:; and

Fig. 6 is a sectional view online of Fig. 4, the arrows adjacent the ends of the said line indicating the'direction in which the section is viewed.

' Throughout the. specification and drawings like parts are designated by like reference characters.

Referring first to Figs. 1 to 3, inclusive, 1 designates the truck side frame which comprises a cast compression member 2 and a flanged tension member 3. It will be understood that while I have illustrated but one half of each side frame that the said frame is symmetrical about its central vertical axis. vided intermediate its ends with a pair of bolster guide columns 4, the inner faces of which define the sides of the bolster opening 5 of the side frame. For convenience I have illustrated the compression member as comprising a web 6 and downwardly directed flanges 7, 7, the later being rein- The compression member 2 is PTO.

forced by laterally extending lips 8. Each bolster guide or strut column 4 preferably comprises a substantially U-shaped member the side walls 9 ofwhich are arranged. in alinement with the side flanges 7 of the compression member 2, and a web 10 which connects the side walls 9 adjacent the bolster opening 5. The upper portion of the said web 10 is adapted to form a wearing face for the coacting faces of the bolster (not here shown). The side edges of the bolster guide column walls 9 are preferably pro vided with reinforcing ribs 11 which'at their upper ends merge into the lips 8 of the compression member 2. At their lower ends the bolster guide columns 4 are pro vided with laterally extending flanges 12 Edi? which are adapted to cooperate with and be connected to the adjacent portions of the compression member 3 which will l1ereinafter be described. The flanges 12 are preferably extended beyond the side edges of the lips 11 and may be connected to the adjacent portions of the lips by means of webs 13. Below the said flanges 12 the side Walls 9 of each bolster column are inwardly inclined as clearly shown at 14 in Fig. 3, and preferably extend the entire length of the said flanges 12.

At each end of the com ression member 2 there is provided a journal box 15, the latter being integrally connected to the flanges-7 of the said member. The Said journal boxes 15 are each provided, on their inner side walls with a wedge shaped laterally pro-- jecting lug 16 which may be integrally connected to the adjacent portion of the compression member. The side walls 17 of the wedge shaped lug 16 merge into the sidewalls 7 of the compression member 2, and the side walls 7 are preferably provided at the points where the same merge into the side Walls 17v with laterally extending flanges 18. v

The tension member 3 is preferably formed as a channel beam having a'web'19 and upwardly and outwardly directed. side flanges 20, the latter each being provided with a laterally extending lip 21. The said member 3 extends from the inner wall of one journal box 15 to a similar point adjacent the side the other journal'box and is adapted to receive within the wedge shaped channel I walls 9 of each bolster guide column have a wedging engagement with the side flanges 20 of the tension member. It will also be observed that the laterally extending flanges 12 of the bolster guide columns are seated upon the lips 21 of the tension member to which they are connected by the rivets 23. Similarly the flanges 18 are seated upon the adjacent portions of the lips 21 and are connected thereto by means of "the rivets 24. and if desired the web 25 of the lug 16. which is in engagement with the adjacent portion of the-web 19 of the member 3, may be connect= ed thereto by the rivets 26.

Adjacent the intersection of the holster guide columns with the compression member 2, I provide the latter with a convenient form of brake hanger bracket 27.

Referring now to Figs. 4 to 6, inclusive, it will be observed that the only change in the compression member 28 from that shown 7 which are formed in a similar manner to the lips 21, beyond the ends of the flanges of the said beam and over the top of the adjacent journal boxes to which they are con nectcd by means of rivets 35. It will be observed from Fig. 5 that these lips 34: straddle the portion of the compression member .I extend the laterally projectinglips 34;,

at the point where the same is connected to the journal box.

The lug 29 is also connected to the tension member by means of the rivets 36 which extend through the web-of the member 31 and through the web 33 of the lug 29.

Except for the above noted differences the twp forms are identical and need not be fun ther described.

" It is to be noted, however, that in both forms of the invention here illustrated, the

neutral axes of the compression and tension members intersect at: points beyond or outside of the verticalplanes passed through the centers of the respective journal boxes.

By this construction I avoid the'destructivetorsional strains which are always present in truck side frames where these intersect-ions lie between the'truclt axles.

Having thus described my invention, what I claim as new and desire to secure by Let ters Patent is:--- a l 1. A truck side frame comprising; a compression member providedintermediate the ends thereof with integral bolster guides and adjacent the ends with integral journal boxes, and a tension member the end portions of which are connected to the said. journalboxes, said tension member havinga recess therein adapted. to receive portions said compression 'member.

2. truck side frame comprising a com. pression member. provided with integral journal boxes, a flanged tension member,

means .tor connecting the said compression member adjacent the said. journal boxes the flanges of the said tension member.

3. A truck side frame comp-rising a compression member. journal boxes grally connected thereto. each of saidjournal boxes being provided with an integral lug, a tension member and means for connecting" said member to the said journal'box lugs,

et. A truck side frame comprising a cast sssion member having integrally i ,1. therewith bolster guide columns and journal boxes, said, bolster guide col- 11 ns and said journal boxes each being provided with Wedge shaped portions, and a tension member having a wedge shaped channel therein, the Wedge shaped portions of the said compression member being adapted to fit Within the channel of the said ten sion member.

' 5.. A truck side frame comprising a'cast compression member provided with integral journal boxes, and a flanged tension member, said journal boxes each having a laterally projecting lug adapted to extend between flanges of the said tension member, and means for connecting said lugs to the adjacent ends of the said tension member.

' '6. A truck side frame comprising a cast compression member, journal boxes integrally connected thereto, bolster guide columns extendin Y from said compression member intermediate the ends thereof, and means for connecting said journal boxes, said means being adapted to have a wedging engagement with said bolster guide columns.

7. A truck side frame comprising a compression member provided with integral journal boxes and integral bolster guide 001- umns, a flanged tension member separably connected to said journal boxes and to said guide columns, the neutral axes, of the said members, when projected being adapted to intersect at points beyond the central vertical axes of the respective journal boxes.

In testimony whereof I afiix my signature.

CLARENCE H. WILLIAMSON. 

